Adhesive label

ABSTRACT

An adhesive label is useable to overlie an adhesive strip and is situated at the leading end of a paper web wound in a roll. The adhesive label is positioned in the running area of a driving belt of a roll changer in a rotary printing machine and is one of several two part labels that are each provided with a defined tear line. These labels are placed over the cut edge of the first layer of the paper web. Each label is provided, in its trailing portion with a plurality of holes.

FIELD OF THE INVENTION

The present invention relates to an adhesive label for a supply roll ofa paper web for a web-fed rotary printing press.

DESCRIPTION OF THE PRIOR ART

Adhesive labels for supply paper rolls are generally known, for usewherein the beginning of the paper web is fastened on the second layerof the paper web. DE 88 01 163 U1 describes an adhesive label with apredetermined tear line for attaching the beginning of a paper web to apaper web supply roll.

It is disadvantageous with this prior device that no connection betweenthe web running out and the beginning of the paper web supply roll iscreated in the area of the adhesive label.

WO 95/05989 describes an adhesive label for fastening the beginning of apaper web on a paper web supply roll. This adhesive label is providedwith a predetermined tear line.

DE-AS 12 67 930 discloses an adhesive label for fastening an adhesivestrip of an paperweb supply roller.

SUMMARY OF THE INVENTION

The present invention has the object of providing an adhesive label foraffixing a beginning of a paper web on a paper web supply roll.

In accordance with the present invention, this object is attained byproviding an adhesive label which has, in the direction of rotation ofthe paper web supply roll, a leading label element and a trailing labelelement. Both of these label elements are delimited by a predeterminedtear line. At least the trailing label element has holes. The trailinglabel element also has a width which corresponds, at least, to the widthof the adhesive application or strip applied to the beginning of thepaper web.

The advantages which can be achieved by of the present invention consistin particular in that, even when the drive belt used to rotate the freshpaper web supply roll is placed obliquely to the roll, and when there isa shortened run-up time of a fresh paper web supply roll provided withone or several adhesive labels, there is no “fly-away” and detachment ofthe holding labels from the beginning of the paper web. A relative axialmovement between the paper web supply roll and the drive belt isabsorbed without damage by the adhesive label. If in the course ofacceleration of the paper web supply roll there should be penetration ofadhesive through the perforations of the adhesive label, so thatadhesive also gets on the drive belt, no “lifting” of the paper webbeginning at each revolution takes place because of the retentive effectof the closure element of the adhesive label. Therefore no tearing ofthe adjoining holding labels and no “fly-away” of the paper web occurs.Because the paper web beginning is glued to the second layer of thesupply roll of paper web, at least in the area of the belt travel, thepenetration of air during the start up between the beginning of thepaper web and the second layer and therefore a premature tearing of theholding labels is prevented. An open adhesive, as well as an adhesivestrip with adhesive on both sides can be used as the adhesiveapplication at the beginning of the paper web.

BRIEF DESCRIPTION OF THE DRAWINGS

The present invention is represented by several preferred embodimentsand will be described in greater detail in what follows. Shown are in:

FIG. 1, a front view of a portion of a paper web supply roll 1 with afirst preferred embodiment of a prepared adhesive by means of holdinglabels extending in an axis-parallel direction, and with an adhesivelabel for the belt travel area;

FIG. 2, an enlarged representation of a predetermined tear line of anadhesive label in accordance with a second preferred embodiment; and

FIG. 3, a representation analogous to FIG. 2 in accordance with a thirdpreferred embodiment.

DESCRIPTION OF THE PREFERRED EMBODIMENTS

A cut edge 2 of the beginning 3 of a paper web formed on a paper websupply roll 1, and extending in an axis-parallel or oblique direction,is maintained on a second layer 7 of the paper web supply roll 1 bymeans of holding labels 6, which are adhesive on one side and which areprovided, for example, with a tear line or perforation line 4, all asseen in FIG. 1. An adhesive application, for example an adhesive strip 8with adhesive on both sides, extends parallel with the cut edge 2,wherein an adhesive strip leading edge 10 is located in the immediatevicinity (for example within, one millimeter) from the cut edge 2 of thebeginning 3 of the paper web. One or several adhesive labels 12, whichare adhesive on their underside, are arranged in a drive belt travelarea or drive belt contact area 9, in which a drive belt 11 of a supplypaper web acceleration device acts on the circumference of the paper websupply roll 1. The adhesive labels 12 have been glued on in such a waythat in the operating direction of rotation D of the supply roll 1 aleading label element 13 of each adhesive label 12 is located on thesecond layer 7 of the paper web supply roll 1. A trailing label element14 of the adhesive label 12 projects past the cut edge 2 of thebeginning 3 of the paper web and bridges, or covers, the adhesive strip8 in the travel or contact area 9 of the drive belt 11.

A predetermined tear line 16, delimits both label elements 13, 14. Thistear line 16 extends between the label element 13 and the label element14 of the adhesive label 12.

The predetermined tear line 16 consists of perforation openings spacedapart from each other in the axial direction of the paper web supplyroll 1. In the applied state of the adhesive label 12 the tear line 16extends along the cut edge 2 of the beginning 3 of the paper web. Forexample, the perforation openings consist of strips 19, 21 of label 12with slits 17, 18 arranged between them The two axially outer strips 19,respectively located in the vicinity of each lateral edge 15 of theadhesive label 12, are longer, for example 5 mm, than the center strip21, which is, for example, 2 mm Therefore the center strip 21 is shorterwith respect to the strips 19 close to the lateral elements 15, sinceless force is exerted at this location when the predetermined tear line16 is torn open. The drive belt 11 extends in such a way that its widthends approximately centered between the outer strips 19. Respectivelateral edge cuts 17 are located at each lateral edge of the adhesivelabel 12. Because of this, the predetermined tear line 16 is preset whenthe paper web supply roll 1 is torn open at its cut edge 2.

In accordance with a second preferred embodiment of the presentinvention, as seen in FIG. 2, an end 20 of a slit 18 respectivelylocated in the vicinity of a strip 19, can also point obliquely inrespect to the predetermined tear line 16 in the direction of the holes22 in the cover element 14. In this way, the trailing label or coverelement 14 at least partially covers the adhesive strip 8.

It is also possible to guide two obliquely directed ends 20 of a slit 18simultaneously both in the direction toward the holes 22 and in thedirection of the leading label element 13.

In accordance with a third preferred embodiment of the presentinvention, as seen in FIG. 3, each strip 19 can have, starting at thepredetermined tear line 16, several slits 26 extending obliquely next toeach other over the entire length “c” of each strip 19. These slits 26can be located on the leading label element 13 as well as on thetrailing label element 14.

The trailing label element 14 has, for example, a width “a” of 55 mm,which width “a”must at least correspond to a width “b” of 50 mm of thetwo-sided adhesive strip 8, as seen in FIG. 1. The leading label element13 can be of the same width, or can be wider or narrower than the width“a” of the trailing label element 14. A number of holes 22, spaced apartnext each other, are arranged in the trailing label element 14, at leastin the vicinity of the predetermined tear line 16. Means adjoining thepredetermined tear line 16 or slightly spaced apart from it, for exampleby 1 millimeter, are arranged in the vicinity of the predetermined tearline 16. The holes 22 can also occupy the entire width “a” of thetrailing label element 14.

The holes 22 can be circular, oval or rectangular, or can have othergeometric shapes.

A grooved or scored line, i.e. a line weakened or reduced continuouslyin paper thickness, can also be used as predetermined tear line 16.

During acceleration of the paper web supply roll 1, the drive belt 11runs on the paper web supply roll 1 in the travel area 9 and comes intocontact with the adhesive label 12 which consists of the two elements13, 14 and which covers the two-sided adhesive strip 8 in the travelarea 9. In the course of connecting the beginning 3 of the paper web ofthe fresh paper web supply roll 1 with a paper web of a paper web roll,not represented, which for example is running out, the running-out paperweb is pressed against the adhesive strip 8 and an adhesive connectionis made. The running-out paper web is pressed on the area of theadhesive strip 8 which is covered by the adhesive label 12 by acontact-pressure roller in such a way, that the running-out paper webcomes into contact, through the holes 22, with the adhesive of theadhesive strip 8 located underneath the holes 22. The perforations 4, 16of the holding and adhesive labels 6, 12, respectively are then tornopen.

It is furthermore possible to also provide the leading label element 13of the adhesive label 12 with holes 22.

In accordance with a further characteristic of the present invention, itis also advantageous if the two-part holding labels 6, which have aperforation 4 over the cut edge 2, are also provided with holes 22 thatare, at least located in the label element 23 which is trailing, in theoperating direction of rotation D of the paper web supply roll. Theholes 22 are at least located in the vicinity of the predetermined tearline 4. By means of this, it becomes possible that the trailing labelelement 23 of this holding label 6 is glued to the adhesive strip 8 andat least partially covering it, while its leading label element 24 isglued to the second layer 7 of the paper web supply roll 1. In thecourse of connecting the paper webs, the running-out paper web can alsocome into contact with the adhesive strip 8 through the holes 22 in thetrailing label element 24 of the holding label 6.

It is furthermore possible to also provide the leading label element 24of the holding label 6 with holes 22.

In its length extending in the axial direction of the paper web supplyroll 1, the adhesive label 12 can also be of such dimensions thatseveral adhesive labels 12, arranged directly one next to the other, canbe provided in the travel area 9 of the drive belt 11.

It is necessary that at least the leading label element 13, 24 of eachof the adhesive label 12 and of the holding label 6, respectively has anadhesive application on the side facing the supply roll 1, i.e. thesecond layer 7 of the paper web supply roll 1.

While preferred embodiments of an adhesive label in accordance with thepresent invention have been set forth fully and completely hereinabove,it will be apparent that a number of changes in, for example the size ofthe paper web supply roll, the operation of the drive belt, and the likecan be made without departing from the true spirit and scope of thepresent invention which is accordingly to be limited only by thefollowing claims.

What is claimed is:
 1. In combination an adhesive label attached to a beginning end of a paper web wound in a paper web supply roll, said paper supply roll having an adhesive strip of a first width secured adjacent a cut edge of said beginning end of said web wound on said paper web supply roll, said adhesive label having a leading adhesive label element; a trailing adhesive label element, said leading and trailing adhesive label elements being joined together along a central tear line; and a plurality of holes formed in said adhesive label in at least said trailing adhesive label element, said plurality of holes in said trailing adhesive label element overlying said adhesive strip when said adhesive label is applied to said paper roll, said trailing adhesive label element having a second width, said second width being at least as great as said first width of the adhesive strip.
 2. The combination of claim 1 wherein said plurality of holes are formed in at least said trailing adhesive label element at least in a portion of said at least trailing adhesive label adjacent said central tear line.
 3. The combination of claim 1 wherein said holes have defined geometrical shapes.
 4. The combination of claim 1 wherein said tear line is oriented adjacent the cut edge of the beginning of said paper web.
 5. The combination of claim 1 wherein said central tear line is defined by a plurality of perforation openings spaced apart from each other.
 6. The combination of claim 5 wherein said plurality of perforation openings are a plurality of spaced slits and further wherein said plurality of spaced slits are spaced from each other in an axial direction of the paper web supply roll by a plurality of strips defined by non-perforated spaces between said plurality of spaced slits, said plurality of strips including at least two axially outer strips and a central strip.
 7. The combination of claim 6 wherein said adhesive label further includes spaced lateral edges and further wherein said axially outer strips are spaced from said lateral edges of said adhesives label and have a first length and said central strip is located centrally in said adhesive label and has a second length, said second length being less than said first length.
 8. The combination of claim 7 wherein one of said plurality of spaced slits is located adjacent each of said outer strips and has an outer slit end, each said outer slit end pointing in a direction oblique to said central tear line.
 9. The combination of claim 1 further including a plurality of said holes formed in said leading adhesive label element.
 10. The combination of claim 1 wherein the paper web supply roll has a drive belt travel area and further wherein said adhesive labels are applicable to the paper web supply roll in the drive belt travel area. 